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Zero tss stack tables

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Alex 2023-03-06 03:21:06 +02:00
parent a3634c3029
commit ac88a1edb7
Signed by untrusted user who does not match committer: enderice2
GPG Key ID: EACC3AD603BAB4DD
1 changed files with 4 additions and 0 deletions
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4
Architecture/amd64/cpu/GlobalDescriptorTable.cpp
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@ -115,6 +115,7 @@ namespace GlobalDescriptorTable
: "memory", "rax"); : "memory", "rax");
CPUStackPointer[Core] = KernelAllocator.RequestPages(TO_PAGES(STACK_SIZE)); CPUStackPointer[Core] = KernelAllocator.RequestPages(TO_PAGES(STACK_SIZE));
memset(CPUStackPointer[Core], 0, STACK_SIZE);
debug("CPU %d Stack Pointer: %#lx", Core, CPUStackPointer[Core]); debug("CPU %d Stack Pointer: %#lx", Core, CPUStackPointer[Core]);
uint64_t Base = (uint64_t)&tss[Core]; uint64_t Base = (uint64_t)&tss[Core];
@ -132,6 +133,9 @@ namespace GlobalDescriptorTable
tss[Core].InterruptStackTable[0] = (uint64_t)KernelAllocator.RequestPages(TO_PAGES(STACK_SIZE)) + STACK_SIZE; tss[Core].InterruptStackTable[0] = (uint64_t)KernelAllocator.RequestPages(TO_PAGES(STACK_SIZE)) + STACK_SIZE;
tss[Core].InterruptStackTable[1] = (uint64_t)KernelAllocator.RequestPages(TO_PAGES(STACK_SIZE)) + STACK_SIZE; tss[Core].InterruptStackTable[1] = (uint64_t)KernelAllocator.RequestPages(TO_PAGES(STACK_SIZE)) + STACK_SIZE;
tss[Core].InterruptStackTable[2] = (uint64_t)KernelAllocator.RequestPages(TO_PAGES(STACK_SIZE)) + STACK_SIZE; tss[Core].InterruptStackTable[2] = (uint64_t)KernelAllocator.RequestPages(TO_PAGES(STACK_SIZE)) + STACK_SIZE;
memset((void *)(tss[Core].InterruptStackTable[0] - STACK_SIZE), 0, STACK_SIZE);
memset((void *)(tss[Core].InterruptStackTable[1] - STACK_SIZE), 0, STACK_SIZE);
memset((void *)(tss[Core].InterruptStackTable[2] - STACK_SIZE), 0, STACK_SIZE);
CPU::x64::ltr(GDT_TSS); CPU::x64::ltr(GDT_TSS);
asmv("mov %%rsp, %0" asmv("mov %%rsp, %0"